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(Nb Mode-1.) 4 Sheets-Sheet 2.

J.. T. GRZ YBOWSKI.

MACHINE FOR GROOVING LUMBER. Q No. 402,521. Patented Apr. 30,1889.

v R! I I gwvem floz) raryzowaw elevation of the same.

UNITED STATES,

FFICE;

JULIAN T. GRZYBOWSKI, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR OF ONE- HALFTO R. E. BUTTERIVORTH AND JAMES LOWE, OF SAME PLACE;

MACHINE FORGROOVING LUMBER SPECIFICATION forming part of Letters PatentNo. 402,521, dated April 30, 1889.

Application filed November 1, 1887. Serial No. 253,989. (No model.) i

To all whom it may concern.-

Be it known that I, JULIAN T. GRZYeOWsKI, a citizen of the UnitedStates, residing at Grand Rapids, in the county of Kent and State ofMichigan, have invented a new and useful Improvement in Machines forGrooving Lumber, of which the followingis'a specification.

My invention relates to an improvement in machines for grooving lumber;and it consists in the peculiarconstruction and combination of devices,that will be more fully set forth hereinafter, and particularly pointedout in the claims.

In the accompanying drawings, Figure 1 is a side elevation of agrooving-machine embodying my improvement. Fig. 2 is an end Fig. 3 View.Fig. 4 is a vertical longitudinal sectional view taken on the line 00 0cof Fig. 3. Fig. 5 is a vertical transverse sectional view taken on theline 3 y of Fig. 3.

A representsa table which is rectangular in shape, and is provided atits four corners with depending posts B, the said posts being made ofmetal and preferably circular. in cross-section. From the center of thesaid table depends a similar post, 0, which is provided on one side witha series of rack-teeth, D.

E represents a pair of cross-timbers-which form a supporting-base. Fromthe ends of these timbers extend supporting-legs F, which are made ofcast metal inclined inwardly toward each other, and are provided attheir-- upper ends with vertical cylindrical sockets G, adapted toreceive the lower ends of the posts B. Set-screws H extend through thesides of the sockets and are adapted to impinge against the poststherein, so as to clamp the posts securely thereto at any desiredelevation, and thus support the table at any desired height. From thecenter of the crossed timbers projects a vertical standard,

I, provided with 'a central opening adapted to receive the lower end ofthe central post, 0. In one side of the said standard is a verticalslot, K, which registers with the rack D, and in the lower end of thesaid slot is pivoted a pawl, L, which engages one of the rack-teeth, andthereby secures the postC at any desired is a top planadjustment in thestandard. Near the upper end of the standard I, in one side of the same,is formed a case, M, in which is journaled a pinion, N, that meshes withthe rack D. One end of the shaft of the pinion projects beyond one endof the case, and is squared and adapted to fit a wrench or lever, 0. Byfirst loosening the set-screws H and disengaging the pawl from therack-bar the pinion may be turned so as to raise or lower the centralpost, 0, and thereby raise or lower the table to the desired adjustment,as will be readily understood. When the table has been thus adjusted,the set-screws H are caused to bind against the post D, and the pawl Lis caused to engage the rack-bar, and thereby maintain the table at therequired adjustment.

It will be understood that the crossed time bers F form a movablesupporting-base for the machine, whereby the machine can be more readilymoved to and set up in another place, or moved into or out ofco-operative position with respect to a planer or other machine. Thestandard and legs are rigidly and permanently secured to this base, andthus the latter serves to maintain the legs andthe standard in theircorrect relative positions, and prevents any of the legs or the standardfrom getting displaced and caused to bind on the depending posts of thetable.

In the ends of the table A are made vertical notches P, which arearranged near the corners thereof, and the said table is also providedwith a series of three transverse slots, B, one of which is made in thecenter of the table, and the others are made near the ends of the table,the saidslots being parallel with each other. On the under side of thetable are grooves S, which are arranged under the slots R andcommunicate therewith.

T represents a series of vertical bearingposts, which are provided attheir lower ends provided with squ-ired openings through which the posts1 extend, and in which the said posts are adapted to move in averticaldirection. The said plates are further provided with square verticalopenings, which are arranged on the sides of the posts.

\V represents bolts which have enlarged heads at their lower ends thatfit in grooves S. The upper portions of the said stems pass throughvertical openings made in the baseplates U, and are provided withclampingnuts X, which secure the base-plates firmly to the table andarrange the posts rigidly at the ends of the slots R. By loosening thenuts X the posts may be moved toward or from each other in the slots,and thus adjusted to any desired extent. In the upper end of each post Tis made a horizontal transverse opening, through which extends a bolt,Y. The inner ends of the stems of the said bolts are circular in formand form the bearingspindles for rollers Z. The outer ends of the saidbolts are provided with screw-threads and nuts A, which screw onto themand serve to secure the bolts firmly in place.

B represents coiled extensile springs which are arranged on thedepending stems V of the bearing-posts, and nuts C are screwed onto thesaid stems V and bear against the lower ends of the said springs, so asto cause the latter to normally move the rollers Z downward to within asuitable distance of the table-top.

D represents a pair of vertical yoke-hangers, which have their upperends bifurcated to form diverging arms, and are provided with verticalslots E of suitable length. From the lower ends of the saidyoke-hangers, on the inner sides thereof, project lugs F ,which extendhorizontally under the table. The said yokehangers D have their verticalport-ions ar-. ranged in the notches P of the table, which arediagonally opposite each other. From the said notches, and formedintegral with the table, depend guide-boxes G. Bolts H, which serve tomaintain the yoke-hangers, have their inner ends screwed into threadedopenings in the inner sides of the guideboxes G, and vertical bolts Iextend upward through openings in the lugs F and engage verticalthreaded openings in the lower ends of the inner sides of the saidguide-boxes. The said bolts 1 enable the yoke-hangers to be adjustedvertically to any desired extent, and the said bolts II enable theyoke-hangers to be secured against movement. at any desired adjustment.From the notches P ,which are directly opposite the notches P in thetable, depend guide-boxes K, which are similar to the boxes G.

L represents a pair of vertical yoke-hangers, which are similar inconstruction to the yoke-hangers D, but are somewhat longer than thelatter, and have their lower portions fitted in the guide-boxes K, andare thus arranged directly opposite the hangers D Bolts M pass throughthe vertical slots in the hangers 'L and engage threaded openings in theboxes K, so as to retain the said hangers L at any desired verticaladjustment, and vertical bolts N pass upward through openings in thelugs at the lower ends of hangers L and engage threaded openings in thelower ends of the guide-boxes K and serve to adjust the said hangers Lvertically. Between the arms atthe upper ends of the hangers D arepivoted bearing-boxes O, and between the diverging arms at the upperends of the yoke-hangers'L are pivoted similar bearingboxes, R. The saidbearing-boxes O and R are each made of a pair of semi-cylindrical piecesbolted together, as shown, provided with projecting trunnions which formtheir axes.

S represents a pair of shafts, which are journaled in the bearing-boxesO and R, and are arranged at a suitable angle with relation to thetable, as shown, the said shafts being inclined in opposite directions.The lower end tf each shaft- S extends a slight distance beyond thelower bearing, 0', in which it is journaled, and is provided with abeltpulley, T. Those portions of the shaft S which are adjacent to theinner ends of the bearingboxes are provided with screw-threads, asshown. A collar, U, is screwed to each shaft S, and is caused to bearagainst the upper end of its lower bearing, 0, in order to prevent theshaft from moving longitudinallyin its bearings, and the said collar Uis provided with a set-screw, V, by means of which it is prevented fromturning on the shaft after the latter has been arranged at the correctadjustment. A series of cutter-heads, WV, is placed 011 shaft S, thesaid cutter-heads being gradually enlarged as they approach the upperportions of the shafts, so that the lower edges of the cutter-heads willbe arranged in the same horizontal plane above the top of the table A.Collars X are placed on the shafts S, and are interposed between thecutter-heads, so as to separate the latter to the desired extent, and asleeve-nut, Y, is screwed on the upper portion of each shaft S andcaused to bear against the largest cuttinghead thereon, so as to bindthe cutter-heads and the collars X tightly together and cause them torotate with the shafts S when the same are turned. Saws or cutters ofsuitable construction are adapted to be secured to the shafts S and arearranged in the same inclined plane therewith. Inasmuch as the shafts Sincline in opposite directions, the saws or cutters which are securedthereto are also caused to incline in opposite directions, andconsequently the saws or cutters attached to the said shafts S arecaused to cut the opposite sides of dovetailed grooves in boards as thesame are fed across the table A and under the rollers Z.

In the front and rear sides of the table A, at the corners thereof, areformed vertical guides or boxes a, in which are secured verticalstandards I; by means of bolts 0, which pass through vertical slots inthe said standards and enter threaded openings in the boxes. To the endsof these standards I) are journaled rollers e. In practice mygrooving-machine is employed in connection with a planing or matchingmachine, and as each board is moved from the planing or matching machineit is fed to the grooving-machine, and is guided by the rollers Z andthe inner edges of the bases U under the revolving cutter-heads, so thatthe saws or cutters thereof form dovetailed grooves in the upper side ofthe board, as will be very readily understood.

The posts T are laterally adjustable toward and from each other, so asto adapt the machine to groove boards of varying widths, and the springsB, which bear downward on the posts T, keep the rollers Z and bearfirmly on the upper sides of the boards, so as to provent the latterfrom rising While being operated upon by the saws or cutters, andconsequently causing the grooves form'ed in the said boards to be of auniform depth.

The grooving-machine. may be operated by belts which extend directlyfrom pulleys on a counter-shaft in the planing or matching machine tothe pulleys T on the shafts S; or the grooving-machine may be driven bybelts connecting its pulleys '1" with suitable pulleys secured to theinclined knuckle-jointed ends of a counter-shaft suspended from theceiling above the machine. Other means may be employed for impartingmotion to the operating parts of my grooving-machine, as will be readilyunderstood, as I donot limit myself in this particular.

It is sometimes desirable to let the boards as they come from theplaning or matching machine pass over the groovin g-machine withoutbeing grooved thereby. In order to accomplish this result, I lower thebed or table A to a plane somewhat below that of the planing or matchingmachine, and also lower the cutters by lowering the standards orbearings in which their shafts are journaled, and move the standards I)upward a sufficient distance to elevate the rollers e to aplane abovethe upper edges of the revolving cutters, said standards being longenough for this purpose. When thus arranged, the boards as they comefrom the planing or matching machine are caused to bear'upon the rollerse, and are directed thereby over the cutters and out of contacttherewith, and consequently the boards pass over the groovinganachinewithout being grooved.

Having thus described my invention, I claim- 1. In a grooving-machine,the combination, with the bed or table having the vertical notches inits sides, of the vertical standards fitting in said notches and havingthe vertical ble, and clam pi n g-bolts extending transversely throughthe slots in the standards and engaging threaded openings in the sidesof the table, the bearings R O, pivoted in the upper ends of thestandards, and the oppositely-inclined shafts journaled in said pivotedbearings and having the cutter-heads, substantially as described.

2. In a grooving-machine, the combination I of the movable base, thehollow central standard, I, and the legs F, arranged around thestandard, all resting on and permanently and rigidly secured to thebase, said legs F being solid and having at their upper ends cylindricalsockets or sleeves G, open at both ends,

the bed-plate or table having the cylindrical posts B, to work throughthe sleeves G, and the post 0, to work into the standard I, theset-screws for the sleeves G, the rack on the post 0, the pinionjournaled in the standard I and engaging the rack, and the pawl, alsoengaging the rack, as set forth.

3. The combination of the movable supporting-base, the vertical standardI, resting on and permanently secured to the center of the base, thelegs F, arranged around the leg I and resting and permanently secured onthe base, whereby said legs or standards I and F are rigidly connected,the sockets or sleeves G at the u er ends of legs F, the bed-plate ortable having the depending posts B extending through and working in thesockets or sleeves, and the depending post 0, working in the standard Iand having the rack and the pinion journaled on the standard I andengaging the rack to lift or lower the bed-plate or table, substantiallyas described.

4. The combination of the crossed timbers E, forming thesupporting-base, the standard I, having its lower end bolted on thecenter of the base, the legs F, having their lower ends secured on theends of the crossed timbers and provided at their upper ends with thesockets or sleeves G, the table or bedplate having the central dependingpost, 0, working in standard I, and the depending corner -posts B,working in the sockets or sleeves, and means, substantially as setforth, to lift and lower the bed-plate or table, substantially asdescribed.

5. The combination, in a groovi-ng1nachine of the bed-plate or tablehaving the slots R, the laterally-adjustable posts T, having the stemsextending through the said slots and depending from the table or plate,said posts bed-plate or table, having the openings to receive the lowerends of the posts, and the bolts-\V, having their heads fitted in thegrooves S, the said bolts extending upward through the slots R andthrough the openings in the base-plate, and provided with clamping-nutsX, bearing on the upper side of the base-plate, for the purpose setforth, substantially as described.

'7. In a grooving-machine, the table or bedplate, the hangers orstandards having the slots E and provided with the lugs F, which engageunder the table, the bolts extending through the slots E and enteringthe table or bed-plate, and thereby securing the hangers thereto, thebearing-boxes pivoted to the said hangers or standards, and theoppositelyinclined shafts j ournaled in the said bearingboxes and havingthe cutter-heads, substantially as described.

8. In a grooving-machine, the table 01' bedplate having the guide-boxesG, the hangers or standards having their upper ends bifurcated to formdiverging arms and having the slots E and provided with the lugs F,which engage under the table, the adj ustingscrews 1 extending throughthe said lugs and engaging the guide-boxes, the bolts extending throughthe slots E and entering the guideboxes, and bearing-b oxes pivoted tosaid hangers or standard, and the oppositely-inclined shafts journaledin the said bearing-boxes and having the cutter-heads, substantially asdescribed.

9. The combination, in a grooving-machine, of the vertically-adjustablebed -plate, the grooving mechanism supported above the bedplate andvertically adjustable, and the vertically-adjustable standards I),secured to the bed-plate and having the rollers e at their upper ends,whereby,when the bed and grooving mechanism are lowered and the standardraised, the rollers serve to direct the board over the groovingmechanism, substantially as described.

10. The combination, in a grooving-machine, of the bed-plate or tablehaving the vertical guide-boxes formed in its sides, theverticallyadjustable hangers or standards secured in the guiding-boxesand having the lugs F, the adjusting-screws I, extending through thesaid lugs and engaging the lower ends of the guiding-boxes, thebearing-boxes pivoted to the said standards or hangers, and theoppositely-inclined shafts journaled in said bearings and having thecutter-heads, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

JULIAN T. GRZYBOXVSKI.

Witnesses:

EDWARD LOWE, HARVEY J OSLTN.

